Optimize your HDD and you can experience speed increases of up to 100%

O&O Defrag Pro

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O&O Defrag Professional 29.0

  -  57.93 MB  -  Trial
Free Download

Security Status

Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system.

Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of O&O Defrag Professional 29.0.


For those interested in downloading the most recent release of O&O Defrag Pro or reading our review, simply click here.


All old versions distributed on our website are completely virus-free and available for download at no cost.


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If you have any questions or ideas that you want to share with us - head over to our Contact page and let us know. We value your feedback!

Download O&O Defrag Professional 29.0

  • O&O Defrag Professional 29.0 Screenshots

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What's new in this version:

- ARM Support: O&O Defrag 29 now supports the family of computer processors based on the ARM (Advanced RISC Machine) architecture, known for their simplicity and efficiency. This platform offers excellent energy efficiency, mobile device expertise and support for multiple operating systems. O&O Software is committed to offering you a guarantee of compatibility on old and new platforms.
- The O&O StartupManager gives you a clear overview of all the programs and apps that start automatically when you boot up your computer. With detailed information about each program - including its impact on your system's boot time - you can easily decide which programs you want to keep enabled or disabled. .
- O&O VisualDisk gives you a clear representation of the write accesses to your hard drive, as they occur on flash-based storage media such as SSDs and NVMe drives. This innovative feature shows you how defragmentation can help reduce future write accesses and extend the life of your SSDs.
- Revamped User Interface: New also since Version 29 is a more modern UI, more intuitive and clear than previous versions.

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